9mm Nagler T6 vs. earlier versions of the same?

Has anyone done side-by-side comparisons of the new 9mm T6 with older versions of the same eyepiece? Looking for comparisons regarding: blackout, eye relief, sharpness, contrast, etc.

Thanks and clear skies!
Mark

Mark, I've been waiting for a response to your post. I just bought a 9mm type one and have been wondering the same thing.

The 9mm was only produced as a 7-element type 1 before the type 6 was introduced. Type 2 Naglers have 8 elements.

At one point there was a redesign of the formerly smooth-style casing of the 9mm Nagler to add the rubber grip ring, rubber eyeguard, and even later threads and a safety undercut in the 2" skirt. In the meantime coatings may have been updated, but the optical design always remained a 7-element type 1.
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Mike

I haven't done a direct comparison since I sold my 9mm type 1 long ago. However, I did compare my old 7mm type 1 to the 7mm type 6 that superseded it. The type 1 did not fare well.

The type 6 Naglers are superb eyepieces for both planetary and deep-sky observing.

Dave Mitsky